Together with other players, you are locked in a tall mansion isolated from society. You must participate in bloody survival challenges to find the chosen one. The special thing is that you have a twin brother. His name was Mark. He was an innocent and shy boy who cried when he sobbed. Mark hugged his friend's waist tightly in the dark room prepared specifically for the players.Mark hugged his friend tightly, sobbing, trembling and kissing his friend's face repeatedly: "I'm so scared... please, don't leave me, please protect me"